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难选铁矿石的分步和分散技术现状 PowerPoint PPT Presentation


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难选铁矿石的分步和分散技术现状. 印万忠 教授 / 博士生导师. 目 录. 1 难选铁矿石难选的原因分析 2 分步浮选技术及其应用实践 3 分散浮选技术及其应用实践 4 分步与分散浮选技术的发展趋势. 1 难选铁矿石难选的原因分析. 超细粉磨技术与装备、焙烧磁选、深度还原等. 有用矿物嵌布太细,且在铁矿物中嵌布微细粒脉石,矿物单体解离困难. 铁矿石难选的原因. 矿物伴生关系复杂,矿物之间的相互罩盖. 分步浮选、焙烧磁选等. 矿石泥化现象严重,矿泥罩盖导致分选困难. 分散浮选、脱泥等.

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难选铁矿石的分步和分散技术现状

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5774258

/


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1

2

3

4


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1


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  • 10m 3%


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CaO


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10%

CaCl2,


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A-0.1mm+0.067mmB-0.067mm+0.045mm -0.045mm

+ 10%


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b

a

SEM 1000

SEM 1000


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aEDS

bEDS


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d

c

SEM 1000

SEM 3000


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cEDS

dEDS


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a-

b-

c-

d e


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20141023


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20141023


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20141023


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20141023


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2


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(%)

(%)


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3%


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NaOH pH11.5CaO

CaCl2


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2

2

3

NaOH

3

3

CaO

3

3

5


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%;%

%

42.84; 100.00

100.00

36.66; 13.31

11.39

43.79; 86.69

88.61

48.56;24.26

29.78;67.08

27.50

65.06; 52.83

46.64

80.23

22.55; 51.21

39.93; 8.39

26.96

7.82

67.84; 43.87

51.45; 8.96

69.47

10.76

19.33; 43.94

26.20; 1.12

19.82

0.68

19.15; 42.82

19.14


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%;%

%

42.84; 100.00

100.00

37.84; 15.97

14.11

43.79; 84.03

85.89

49.41; 20.11

31.13; 63.52

23.20

62.03; 56.42

46.16

81.69

23.51; 45.73

39.28; 2.32

25.10

2.14

66.37; 40.62

50.87; 15.80

62.93

18.76

25.95; 51.00

44.72; 7.59

30.89

7.93

22.67; 43.41

22.96


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2010514

2010823


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6

5


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31.24,326.5

31.24,226.5

326.5

226.5

31.24,100

31.24,100

100

100

32.56,169.36

29.37,64.91

34.43,102.24

29.71,67.12

61.03

63.83

176.51

112.68

44.05,47.95

43.23,37.33

51.65

67.62

12.71

20.31,20.98

43.52,39.00

34.78,25.32

10.56,28.13

15.07,63.81

53.05 11.22

25.08,55.90

63.03,31.61

37.44,4.58

34.28,44.04

61.05,12.01

39.67,27.77

34.46 69.36

31.77,19.37

64.24,19.60

44.33,34.41

34.24 8.10

14.2,49.00

30.59,22.91

35.67,30.33

25.92,6.18

31.77,19.37

42.42,15.53

45.65,15.04

17.97,14.81

56.17,34.64

46.60,64.98

19.07

44.88

35.26

28.19

54.32

62.29

48.82

9.51

21.98

21.08

34.63

5.50

19.70

23.46

76.51

8.88

48.32

22.43

96.92

40.31

22.27

63.77

8.52

30.73

5.12

13.64

19.70

% %

%

19.02,20.87


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3


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;


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YJ


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2.8352m

d50=1.2763m

28695cm2/cm3

5m85%10m5%


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pH=11.5

YJ 500g/t

800g/t

CaO 800g/t

KS- 200g/t


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2800r/min

pH=11.5

YJ 500g/t

800g/t

CaO 800g/t

2800r/min

YJ 500g/t

800g/t

CaO 800g/t

KS- 200g/t

pH


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2800r/min

pH=11.5

YJ 500g/t

CaO 800g/t

KS- 800g/t

2800r/min

pH=11.5

YJ 500g/t

2200g/t

KS- 800g/t


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2800r/min

pH=11.5

YJ 500g/t

2200g/t

KS- 800g/t

2800r/min

pH=11.5

2200g/t

KS- 800g/t


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4min

2800r/min

52.91%

58.34%

KS-

800g/t

pH=11.5

YJ

500g/t

2200g/t


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pH=11.5

YJ 500g/t

2200g/t

KS- 800g/t

4min

pH=11.5

pH=11.5

KS- 200g/t

600g/t

3min

pH=11.5

4min

KS- 200g/t

3min

pH=11.5

pH=11.5

400g/t

KS- 200g/t

3min

4min


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20.9516.33

7.94

5.8453.20

7.21

7.7546.43

8.36

14.4740.68

13.66

19.7261.23

28.03

25.5659.40

35.24

47.7851.62

57.26

100.0043.08

100.00

28.3624.72

16.28

52.2235.26

42.74

23.8647.78

26.47

7.4248.41

8.34

33.3156.38

43.59

%Fe%

Fe%


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100.0042.62

100.00

115.2142.24

114.17

43.3156.20

57.10

15.2139.71

14.17

58.5251.91

71.27

56.6932.26

42.90

%Fe%

Fe%

42.96%


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2011423-4284295858


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100.0040.31

100.00

124.1140.92

125.99

26.9961.36

41.08

24.1143.45

25.99

51.1052.91

67.07

73.0132.53

58.92

%Fe%

Fe%


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a

b-

c-

600

a-

b-

c-


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31.24,326.5

31.24,226.5

326.5

226.5

31.24,100

31.24,100

100

100

32.56,169.36

29.37,64.91

34.43,102.24

29.71,67.12

61.03

63.83

176.51

112.68

44.05,47.95

43.23,37.33

51.65

67.62

12.71

20.31,20.98

43.52,39.00

34.78,25.32

10.56,28.13

15.07,63.81

53.05 11.22

25.08,55.90

63.03,31.61

37.44,4.58

34.28,44.04

61.05,12.01

39.67,27.77

34.46 69.36

31.77,19.37

64.24,19.60

44.33,34.41

34.24 8.10

14.2,49.00

30.59,22.91

35.67,30.33

25.92,6.18

31.77,19.37

42.42,15.53

45.65,15.04

17.97,14.81

56.17,34.64

46.60,64.98

19.07

44.88

35.26

28.19

54.32

62.29

48.82

9.51

21.98

21.08

34.63

5.50

19.70

23.46

76.51

8.88

48.32

22.43

96.92

40.31

22.27

63.77

8.52

30.73

5.12

13.64

19.70

% %

%

19.02,20.87


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pH

pH

25%

2800r/min

500g/t

2200g/t

CaO 600g/t

KS-800g/t

pH


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pH11

25%

40

2800r/min

2200g/t

CaO 600g/t

KS-1000g/t


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pH11

25%

40

2800r/min

2200g/t

CaO 600g/t

KS-1000g/t

800g/t


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pH11

25%

40

2800r/min

2200g/t

CaO 600g/t

KS-1000g/t

2800r/min


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pH11

25%

40

2800r/min

2200g/t

CaO 600g/t

KS-1000g/t

2800r/min


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g/t

pH=11

800

2200

CaO 600

KS 1000

3

3

3

3

pH=11

CaO 400

KS 500

pH=11

100

2

4.5min

2

2

pH=11

CaO 200

KS 250

pH=11

50

2

2min

2min

2

2

2min

1.5min


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